We actually can't stop watching this video of John Key dabbing

Aspiring DJ and YouTube star Max Key has drawn on the star power of his father in an effort to increase subscriptions to his video channel.

In his latest YouTube video, entitled 'MY FRIENDS THREW ME A SURPRISE BIRTHDAY PARTY!!!', Max celebrates turning 22 with a self-narrated vlog at his parents' swanky Parnell mansion - and later the surprise party at a different address.

But the most memorable moment of his heavily edited 10-minute clip wasn't any of his birthday-related material - it was a cameo from his far more famous father, ex-Prime Minister John Key.

The video features Mr Key undertaking a dance move known as the dab and demonstrating just how disconnected he is from pop culture by failing to recall lyrics from an iconic pop song.

Just moments after Max explains that conditioning his hair makes him look like "a little b*tch" at about the three-minute mark, he then approaches his dad, who is perusing the barbecue.